CVE-2026-70458

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:vulncheck, epss
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINK_BUMP processing on file entries with the FLAG_HLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing F_SUM field in the file_struct layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
Patch available. Sources: github_release, github.
generic

rsync 3.0.0 < 3.5.0 Out-of-Bounds Write via FLAG_HLINKED Handling | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-out-of-bounds-write-via-flag-hlinked-handling
github_release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
github Patch Available

rsync: Out-of-bounds write from a FLAG_HLINKED file entry accepted without -H · Advisory · RsyncProject/rsync · GitHub

https://github.com/RsyncProject/rsync/security/advisories/GHSA-gg3m-4m9m-268h

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 21× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 20:27 UTCVendor advisory
  3. 2026-08-29 07:40 UTCEG score recompute
  4. 2026-08-29 07:40 UTCVendor advisory
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 09:03 UTCVendor advisory
  7. 2026-08-27 20:59 UTCEG score recompute
  8. 2026-08-27 20:59 UTCVendor advisory
  9. 2026-08-27 08:56 UTCVendor advisory
  10. 2026-08-26 20:52 UTCEG score recompute
  11. 2026-08-26 20:52 UTCVendor advisory
  12. 2026-08-26 14:47 UTCEPSS rescore
  13. 2026-08-26 08:44 UTCVendor advisory
  14. 2026-08-25 20:40 UTCEG score recompute
  15. 2026-08-25 20:40 UTCVendor advisory
  16. 2026-08-25 13:49 UTCEPSS rescore
  17. 2026-08-25 08:26 UTCVendor advisory
  18. 2026-08-24 20:04 UTCEG score recompute
  19. 2026-08-24 20:04 UTCVendor advisory
  20. 2026-08-24 08:00 UTCVendor advisory
  21. 2026-08-23 07:52 UTCEG score recompute
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-22 07:45 UTCEG score recompute
  24. 2026-08-21 23:49 UTCEPSS rescore
  25. 2026-08-21 07:38 UTCEG score recompute
Show 21 more
  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-19 19:27 UTCEG score recompute
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-18 19:20 UTCEG score recompute
  5. 2026-08-18 13:49 UTCEPSS rescore
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-17 19:12 UTCEG score recompute
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-16 17:22 UTCEG score recompute
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 05:18 UTCEG score recompute
  13. 2026-08-16 02:15 UTCEPSS rescore
  14. 2026-08-15 05:11 UTCEG score recompute
  15. 2026-08-15 01:31 UTCEPSS rescore
  16. 2026-08-14 13:14 UTCEG score recompute
  17. 2026-08-13 16:25 UTCEG score recompute
  18. 2026-08-13 15:59 UTCEG score recompute
  19. 2026-08-13 15:23 UTCEG score recompute
  20. 2026-08-13 15:12 UTCEG score recompute
  21. 2026-08-13 15:11 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-70458?
CVE-2026-70458 is a high vulnerability published on August 13, 2026. rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINKBUMP processing on file entries with the FLAGHLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing FSUM field in the…
When was CVE-2026-70458 disclosed?
CVE-2026-70458 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70458 actively exploited?
CVE-2026-70458 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-70458?
CVE-2026-70458 has a CVSS v4.0 base score of 8.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70458?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70458, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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